gsd-2021-20852
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors.
Aliases
Aliases
CVE-2021-20852


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-20852",
    "description": "Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors.",
    "id": "GSD-2021-20852"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20852"
      ],
      "details": "Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors.",
      "id": "GSD-2021-20852",
      "modified": "2023-12-13T01:23:12.174487Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "vultures@jpcert.or.jp",
        "ID": "CVE-2021-20852",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "ELECOM LAN routers",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "ELECOM CO.,LTD."
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "value": "Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Buffer Overflow"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.elecom.co.jp/news/security/20211130-01/",
            "refsource": "MISC",
            "url": "https://www.elecom.co.jp/news/security/20211130-01/"
          },
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            "refsource": "MISC",
            "url": "https://jvn.jp/en/jp/JVN88993473/index.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [
              {
                "children": [],
                "cpe_match": [
                  {
                    "cpe23Uri": "cpe:2.3:o:elecom:wrh-733gbk_firmware:*:*:*:*:*:*:*:*",
                    "cpe_name": [],
                    "versionEndIncluding": "1.02.9",
                    "vulnerable": true
                  }
                ],
                "operator": "OR"
              },
              {
                "children": [],
                "cpe_match": [
                  {
                    "cpe23Uri": "cpe:2.3:h:elecom:wrh-733gbk:-:*:*:*:*:*:*:*",
                    "cpe_name": [],
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            ],
            "cpe_match": [],
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          },
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            "children": [
              {
                "children": [],
                "cpe_match": [
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                    "cpe23Uri": "cpe:2.3:o:elecom:wrh-733gwh_firmware:*:*:*:*:*:*:*:*",
                    "cpe_name": [],
                    "versionEndIncluding": "1.02.9",
                    "vulnerable": true
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                "operator": "OR"
              },
              {
                "children": [],
                "cpe_match": [
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          "ID": "CVE-2021-20852"
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        "data_version": "4.0",
        "description": {
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              "lang": "en",
              "value": "Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-120"
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          ]
        },
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          "reference_data": [
            {
              "name": "https://jvn.jp/en/jp/JVN88993473/index.html",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
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              "url": "https://jvn.jp/en/jp/JVN88993473/index.html"
            },
            {
              "name": "https://www.elecom.co.jp/news/security/20211130-01/",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://www.elecom.co.jp/news/security/20211130-01/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.2,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:A/AC:L/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 5.1,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 0.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-12-02T19:45Z",
      "publishedDate": "2021-12-01T03:15Z"
    }
  }
}


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